not him but here's my point of view
the Arland games at least (haven't really played the others, only Ayesha for a bit) are 50% cute girl SoL. You know the term iyashikei? That's how the plots feel, even the more dramatic Totori plot ends up on the heartwarming side. Lots of fanservice too, like bathing girls.
The other 50% are merciless number crunching, free form exploration and lots I mean LOTS OF CRAFTING. When you're an Atelier pro, you're basically an Islamic terrorist - all your thoughts will revolve about making the deadliest bombs. The games have very many endings, and to fulfill all the true endings/clear post games you need meticulous planning.